Have a 95 chevy s10 zr2 4.3 cpi. starts and idles fine, when u hit gas in park, no problems. when i try 2 drive it hesitates and wont go when given good amount of gas. putting around 30 mph. no problem. normal driving it just wont go sometimes. on my scanner im getting codes pending p0700 and p1100-transmition control system malfunction and regular trouble code p0325-knock sensor-which i have put a new one on and no diff. i have put new fuel filter and fuel pump on and little change. the tranny